Importance of Mulching

 
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Tree Selection
 
Proper tree care begins with selecting the right tree and planting it in the right place. Trees are for a lifetime, so it pays to spend time now making sure that your tree will thrive where you want to plant it.
 
Find a tree with the Arbor Day Tree Wizard. This free online tool will help you narrow down your choices and help you select the right tree for the right place.
 
 
Wrong Trees, Wrong Places

Planting large trees under utility lines can eventually mean mutilated trees as they grow to maturity. Large evergreens close to the house on the south block warming winter sunlight. No trees on the north side of the house can leave it vulnerable to icy winter winds.

 
Better Choices

Short, flowering trees don’t clash with overhead utility lines. Large deciduous trees on the southeast, southwest, and west provide cooling shade in the summer, but don’t obstruct the low winter sun. An evergreen windbreak on the north blocks cold winds in winter.

 

 

 

 
Find a tree with the Arbor Day Tree Wizard. This free online tool will help you narrow down your choices and help you select the right tree for the right place.
 
Step 1—The Tree’s Purpose: Start by defining the purpose for your new tree. Common purposes include aesthetics, privacy, shade/energy reduction, windbreak, or street tree. Your end goal will impact the suitability of different trees.
 
Step 2: Next consider your planting site limitations, things to consider include:
  • Hardiness Zone: your location and weather have a tremendous impact on what trees will grow.
  • Height and Spread of Mature Trees: Example overhead wires will limit the height of mature tree and you will want to select a shorter tree. The chart below is a great representation of the range of heights of tree species.
  • Sun Exposure: The sun exposure in your planting area will greatly affect how your tree grows.
  • Soil Conditions: Some trees can grow in only specific types of soil, while others can grow in almost any condition the type of soil. Determining what type of soil you have in your yard will help you find the right tree.
 
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Selecting a Healthy Tree
 
Good tree care starts with a healthy tree. Follow these tips and learn how to buy a tree.
 
What to Look for on Your New Tree
 
 
         
  • Roots should be moist & fibrous.
  • Deciduous seedlings should have roots about equal to stem length.
  • Soil plug should be moist and firm.
  • Avoid tall, spindly tops. Well-developed roots are more important.
  • Root ball should be firm to the touch, especially near the trunk.
  • Root ball should be adequate for the tree’s size.
  • Pot should not contain large, circling roots.
  • Pruned roots cut cleanly, none wider than a finger.
  • Soil & roots joined tightly.
 
         
         
Some Extra Things to Consider When Purchasing Mature Trees
 
When choosing trees for city plantings along streets and in parks, you will want to trees with fairly substantial caliper (trunk diameter).
 
  • Strong, well-developed leader (or leaders in a multi-leader tree).
  • Bright, healthy bark.
  • Trunk & limbs free of insect or mechanical injury.
  • Branches well-distributed around trunk, considerably smaller caliper than trunk.
  • Ideal spacing between branches, at least 8–12" for most species.
  • Good trunk taper.
  • Wide-angle crotches for strength.
  • Low branches—they are temporary, but help develop taper, promote trunk caliper growth, and prevent sun damage.
  • After a good start with good nursery stock, now it is time to learn how to plant your tree.
 
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How to Plant a Tree
 
While planting each of these different types of trees differs in the details, all trees eventually end up in a hole. But not any hole will do.
 
  • The most common mistake when planting a tree is a digging hole, which is both too deep and too narrow. Too deep and the roots do not have access to sufficient oxygen to ensure proper growth. Too narrow and the root structure can not expand sufficiently to nourish and properly anchor the tree.
  • As a general rule, trees should be transplanted no deeper than the soil in which they were originally grown. The width of the hole should be at least 3 times the diameter of the root ball or container or the spread of the roots in the case of bare root trees. This will provide the tree with enough worked earth for its root structure to establish itself.
  • When digging in poorly drained clay soil, it is important to avoid ‘glazing’. Glazing occurs when the sides and bottom of a hole become smoothed forming a barrier, through which water has difficulty passing. To break up the glaze, use a fork to work the bottom and drag the points along the sides of the completed hole. Also, raising the centre bottom of the hole slightly higher than the surrounding area. This allows water to disperse, reducing the possibility of water pooling in the planting zone.
 
Planting Bare-Rooted Trees
 

Planting bare-rooted trees is a little different as there is no soil surrounding the roots. Most importantly, the time between purchase and planting is a more critical issue. Plant as soon as possible. When purchasing bare-rooted trees, inspect the roots to ensure that they are moist and have numerous lengths of fine root hairs (healthy). Care should be taken to ensure that the roots are kept moist in the period between purchase and planting. Prune broken or damaged roots but save as much of the root structure as you can.

To plant, first build a cone of earth in the centre of the hole around which to splay the roots. Make sure that when properly seated on this cone the tree is planted so that the ‘trunk flare’ is clearly visible and the ‘crown’, where the roots and top meet, is about two inches above the soil level. This is to allow for natural settling.

 
Planting Plugs or Balled and Burlapped Trees
 
Balled and burlapped (B & B) trees, although best planted as soon as possible, can be stored for some time after purchase as long as the ball is kept moist and the tree stored in a shady area. B & B trees should always be lifted by the ball, never by the trunk. The burlap surrounding the ball of earth and roots should either be cut away completely (mandatory, in the case of synthetic or plastic burlap) or at least pulled back from the top third of the ball (in the case of natural burlap). Any string or twine should also be removed. Backfill soil (combinations of peat moss, composted manure, topsoil, etc.) is then placed in the hole surrounding the tree just to the height of the ball or slightly lower to allow for some settling. Be careful not to compress the back fill soil as this may prevent water from reaching the roots and the roots from expanding beyond the ball.
 
Planting Container Trees
 

Container trees (though subject to greater heat and drying conditions than B and B) can also be stored for a brief period of time after purchase as long as the soil in the container is kept moist and the tree stored in a shady spot. The procedure for planting container trees is similar to that for B & B trees. In the case of metal or plastic containers, remove the container completely. In the case of fibre containers, tear the sides away.

Once carefully removed from the container, check the roots. If they are tightly compressed or ‘potbound’, use your fingers or a blunt instrument (to minimize root tearing) to carefully tease the fine roots away from the tight mass and then spread the roots prior to planting. In the case of extremely woody compacted roots, it may be necessary to use a spade to open up the bottom half of the root system. The root system is then pulled apart or ‘butterflied’ prior to planting. Loosening the root structure in this way is extremely important in the case of container plants. Failure to do so may result in the roots ‘girdling’ and killing the tree. At the very least, the roots will have difficulty expanding beyond the dimensions of the original container. To further assist this, lightly break up even the soil outside the planting zone. This allows roots that quickly move out of the planting zone to be more resilient as they anchor into existing surrounding soil conditions.

Once the tree is seated in the hole, the original soil is then back-filled into the hole to the soil level of the container. Again, remember not to overly compress the back-filled soil especially by tramping it with your feet. Compress gently using your hands instead.

 
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A newly planted tree’s best friend is mulch. It is very important to remember to mulch your tree after you have planted it.
 
Mulch is a valuable for your trees health and care because

* Mulch insulates the soil helping to provide a buffer from heat and cold temperatures.
* Mulch retains water helping to keep the roots moist.
* Mulch keeps weeds out to help prevent root competition.
* Mulch prevents soil compaction.
* Mulch reduces lawn mower damage.

Steps to Adding Mulch Around Your Tree

1. Add mulch to the base of your tree by removing any grass within a 3 to 10 foot area depending on the size of your tree.
2. Pour natural mulch such as wood chips or bark pieces 2 to 4 inches deep within the circle.
3. Keep the mulch from touching the trunk of the tree.

 
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Tree Watering
 
Tree watering is a key part of tree care and it is difficult to recommend an exact amount due to the varieties of climates. But a few rules of thumb will help guide you to water your trees properly.
 
  • Watering Newly Planted Trees: For new trees, water immediately after you plant a tree.
  • Watering Trees During First Two Years: During the first couple growing seasons, your newly planted tree is expending a lot of energy trying to get its roots established in the soil. Especially during the first few summers of your new trees life, it will have a difficult time dealing with heat and drought. You can make this easier by providing water and covering the soil with wood-chip mulch. Deep watering can help speed the root establishment. Deep water consists of keeping the soil moist to a depth that includes all the roots.
  • How Much Water and When: Not enough water is harmful for the tree but too much water is bad as well. Over-watering is a common tree care mistake. Please note that moist is different than soggy, and you can judge this by feel. A damp soil that dries for a short period will allow adequate oxygen to permeate the soil.
    • As a rule of thumb your soil should be moist. Usually 30 seconds with a steady stream of water from a garden hose w/ a diffuser nozzle per tree seedlings is sufficient. Mulching is also key in retaining moisture in the soil.
    • You can check soil moisture by using a garden trowel and inserting it into the ground to a depth of 2”, and then move the blade of the trowel back and forth to create a small narrow trench. Then use your finger to touch the soil. If it is most to the touch, then they do not need water.ut not any hole will do.
  • Watering Trees After the First Two Years: After your tree has been established in your yard for two years the roots will be established. This will allow your tree to withstand a wider range of water conditions including on its own because it has a proper root structure.
 
Drought-Tolerant Species:
 

These trees are adapted to sites in their native habitat that regularly experience prolonged dry spells. Although they are native to drought and are more tolerant than others the first few years of life is critical to the survival of the any tree and follow the steps above will help your trees grow.

* Thornless Honeylocust (Zones 3 to 9)
* Mugo Pine (Zones 3 to 7)
* Arizona Cypress (Zones 7 to 9)
* Japanese Zelkova (Zones 5 to 8)

 
 

High Soil Moisture-Tolerant Species

On the opposite side of the spectrum if your area deals with a large amount of moisture or wet conditions here are a few trees that will do better in wet conditions.

* Red Maple (Zones 3 to 9)
* Silver Maple (Zones 3 to 9)
* Paper Birch (Zones 2 to 7)
* River Birch (Zones 4 to 9)
* Swamp White Oak
* Baldcypress (Zones 4 to 10)
* Shellbark Hickory (Zones 5 to 8)
* Weeping Willow (Zones 6 to 8)

 
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